Siblings are

A couple has two sons and two daughters. Only one son is colour blind and the rest of the siblings are normal. Assuming colour blindness is sex-linked, which ONE of the following would be the phenotype of the parents ?

Sibling species are also known as

What is Sibling species?

How is Golu's sibling's grandfather's only daughter's only child related to Golu ?

How is my father's brother's only sibling related to me?

Two organisms of different species mate and produce an offspring cannot mate with its siblings, nor with the members of either parental species. This is an example of